Abstract
The patient was a 23-year-old man, who noticed tumors around the anus 1 year prior to visiting the hospital. These tumors had increased in size over the previous two months. Condyloma acuminatum was suggested, and the patient was referred to our division. Two tumors measuring 2.5 cm and 2.0 cm in diameter, respectively, were found around the anus. Histopathological examination revealed that the entire dermis was infiltrated with inflammatory cells and epithelioid granulomas were formed. Fever, abdominal pain, and a bloody bowel discharge developed 3 weeks after the operation. Crohn’s disease was diagnosed in acknowledgment of the granulomas in the lower part of the gastrointestinal tract on endoscopic biopsy. Based on the above findings, we made a final diagnosis of perianal skin tags related to Crohn’s disease that developed before digestive symptoms. Crohn’s disease is frequently associated with anal lesions that often precede abdominal symptoms. When patients present with tumors around the anus, it is necessary to consider the perianal skin tags of Crohn’s disease as part of the differential diagnosis.
